Polish world number one Iga Świątek has been knocked out of the Australian Open in the women's singles fourth-round, following a straight-sets defeat to Kazakhstan's Elena Rybakina.

of the line technology in her post-match interview.Stefanos Tsitsipas won a five-set showdown with Jannik

Sinner at the Rod Laver Arena ©Getty ImagesIn the most-anticipated tie in the men's fourth-round today

, Stefanos Tsitsipas maintained his consistency at the Australian Open, defeating Italian 15th seed Jannik

Sinner in five sets.The Greek third seed has struggled with some Grand Slam form - never making the

The third round of the Australian Open started today, with Polish world number one Iga Świątek and Americans Jessica Pegula and Coco Gauff thrashing their opponents, as day five proved a more profitable one for seeded players.

player Tallon Griekspoor in straight sets 6-2, 7-6, 6-3, but his next-round opponent Italian 15th seed Jannik

Sinner had to come from two sets down to beat Hungarian Márton Fucsovics 4-6, 4-6, 6-1, 6-2, 6-0.Japanese

World number one and US Open champion Carlos Alcaraz was beaten in his first Davis Cup Finals appearance this year for Spain, who were defeated by Canada in the day's Group B tie in Valencia.

lead in the tie at the Unipol Arena in Bologna when Matteo Berrettini overcame Sebastian Baez 6-2, 6-3.Jannik

Sinner then confirmed victory in the tie as he won the second singles rubber 7-5, 1-6, 6-3 against Francisco

Carlos Alcaraz is still digesting the fact that he is the world's best men's tennis player.

Alcaraz had three five-set victories against Marin Cilic, Jannik Sinner and Frances Tiafoe during his

the first time in his career, coming out on top in a tight five-set contest against Italian 11th seed Jannik

Sinner which lasted more than five hours.

6-7, 7-5, 6-3.Alcaraz had opportunities to progress in just three sets, but lost both tiebreaks to Sinner

managed to turn the fourth set in his favour, but was on the back foot once again in the fifth when Sinner

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number one Jessica Pegula on her way to victory against Aliaksandra Sasnovich ©Getty ImagesItalian Jannik

Sinner towels himself down on the way to a second-round victory ©Getty Images2014 US Open champion Marin

Defending champion Emma Raducanu was one of several star names to crash out in the first round of the US Open, exiting the women's singles at the hands of Alizé Cornet.

7-6.Polish eighth seed Hubert Hurkacz defeated Oscar Otte of Germany 6-4, 6-2, 6-4.Seeded Italians Jannik

Sinner and Lorenzo Musetti required five sets to progress.Eleventh seed Sinner won 5-7, 6-2, 6-1, 3-

Picture gallery

Jannik Sinner bowed out after five sets with Novak Djokovic ©Getty ImagesTatjana Maria embracing Jule

Niemeier after beating her German compatriot ©Getty ImagesNovak Djokovic checking on Jannik Sinner after

top seed Novak Djokovic came from two sets down to stage a trademark comeback against young Italian Jannik

Sinner in the quarter-finals at Wimbledon to make it into the final four of the men's singles for the

straight title at Wimbledon looked to be in danger for the 21-time Grand Slam winner, when 10th seed Sinner

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women's singles ©Getty ImagesCarlos Alcaraz was eliminated today in the fourth round after four sets with Jannik

Sinner ©Getty ImagesJohn McEnroe, Stefan Edberg and Roger Federer were some of the past winners welcomed

In a battle of two prodigies, Italy's 10th seed Jannik Sinner advanced to the quarter-finals in four

The 20-year-old Sinner, used his forehand strikes to his advantage to defeat his 19-year-old opponent

-2, 4-6, 6-1, 6-2 in a match that finished shortly before 11pm.It means Djokovic is now due to play Sinner

Britain are guaranteed a player in the fourth round of the men's and women's singles, with Heather Watson and Cameron Norrie making this stage for the first time at Wimbledon, in front of home fans.

thrashed German 32nd seed Oscar Otte 6-3, 6-1, 6-2.Alcaraz is next in action against Italian 10th seed Jannik

Sinner, defeating American 20th seed John Isner 6-4, 7-6, 6-3.American 23rd seed Frances Tiafoe came

Third seed Casper Ruud was knocked out of Wimbledon by Ugo Humbert - despite the Frenchman arriving on the grass court without a racquet - while two-time champion Sir Andy Murray is also out.

Djokovic is set to miss next year's Australian Open as well as the 2022 US Open.Twenty-year-old Italian Jannik

Sinner, seeded 10th, will play Isner following a four-set win against Swede Mikael Ymer.Spaniard Carlos

Two of the top four seeds, Daniil Medvedev and Stefanos Tsitsipas were eliminated as the men’s singles fourth round concluded at the French Open at Roland Garros.

men’s quarter-finals went to Russian Andrey Rublev, playing as a neutral, who advanced when Italy’s Jannik

Sinner retired hurt early in the third set.Sinner won the first set 6-1, but suffered a serious looking

Matches went with form as the men’s singles third round concluded at the French Open tennis at Roland Garros in Paris, with all the top ten seeds in action today claiming victories.

6-4, 6-3 in just under three and a half hours.Elsewhere there were straight sets wins for 11th seed Jannik

Sinner of Italy who beat Mackenzie Mcdonald of the US 6-3, 7-6, 6-3, while 12th seeded Hubert Hurkacz